Author Topic: INTIALISATION CODE FOR NHD-3.12-25664UCB2-ND  (Read 1097 times)

semed

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INTIALISATION CODE FOR NHD-3.12-25664UCB2-ND
« on: January 26, 2018, 08:57:21 PM »
Hello I recently got a NHD-3.12-25664UCB2-ND oled
So far I am having trouble to get it running
I have set up with SPI serial interface and run the initialisation on the data sheet but doesnt work
I am not sure what to do does anyone know where I can find the C initialisation code for this device?
thanks

Saurabh_B

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Re: INTIALIZATION CODE FOR NHD-3.12-25664UCB2-ND
« Reply #1 on: January 30, 2018, 03:43:02 PM »
Just using the initialization routine will not power the display.
Have you tried writing information to the display at all?

I would recommend using the following link for example code:
https://newhavendisplay.com/appnotes/excode/txt/OLED/OLED_25664.txt

There are also libraries available on github:
https://github.com/search?utf8=%E2%9C%93&q=SEPS525&type=

semed

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Re: INTIALISATION CODE FOR NHD-3.12-25664UCB2-ND
« Reply #2 on: January 30, 2018, 07:47:14 PM »
thanks Saurabh_B i used the example code from the link you provided.
i am able to get certain commands to work like the on/off commands
Display turns on and off when i send on off command but when i write ASCII  characters to the ram it does not appear on display screen
the code from example is good but poorly commented
I don't understand a lot of the example code
 when i invoke the GrayScale function I do see the gray scale table but I am not able to write characters to the display screen  i am using this loop to write to the ram but doesnt appear on the display

Set_Column_Address_25664(0x00,0x24);
   Set_Row_Address_25664(0x00,0x33);
    writeLCD_cmd(0xA0);                   // horizontal increment mode
   Set_Write_RAM_25664();
   
    for(i=0;i<50;i++)
    {
        writeLCD_data('a');
        delay_ms(1000);
    }

also regarding this function  can you please explain what the function does and also if the can provide some comments on the rest of code as this will save people lots of hours
I dont understand what the input variables a
Also the variable Ascii_1[(b-1)][0]; is this a two dimensional array to be output to the display please explain thanks
 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//  Show Character (5x7)
//
//    a: Database
//    b: Ascii
//    c: Start X Address
//    d: Start Y Address
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
void Show_Font57_25664(unsigned char a, unsigned char b, unsigned char c, unsigned char d)

Saurabh_B

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Re: INTIALISATION CODE FOR NHD-3.12-25664UCB2-ND
« Reply #3 on: January 31, 2018, 09:34:54 AM »
The full code was from an older example which had plans to be extended.
However we were never able to add the Font Table to the code.

Many of the links you have through github include font tables.
Because this is a graphics display the controller itself does not have built in fonts. These need to be provided.

semed

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Re: INTIALISATION CODE FOR NHD-3.12-25664UCB2-ND
« Reply #4 on: January 31, 2018, 01:06:10 PM »
thanks Surab
I am interfacing with PIC32  mcu so i cant use the arduino libraries much
is there documentation for the c example code?
the code has barely any comments saying what the input variables mean and what exactly each functions

semed

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Re: INTIALISATION CODE FOR NHD-3.12-25664UCB2-ND
« Reply #5 on: January 31, 2018, 03:44:03 PM »
hi Surab thanks.
I copied this 97x5 array from one of the github links as my font table
i assigned it to the variable Ascii_1 as in the example code
I am still having a hard time understanding what exactly the functions in the example code do

and also what the input variables to the functions stand for
does the code has any official documentation?
i still cant get characters on the display when i invoke the  Show_String_25664(unsigned char a, unsigned char *Data_Pointer, unsigned char b, unsigned char c) funcntion can you explain what each of those input variables represent and also for the other functions?


unsigned char Ascii_1[97][5] = {     // Refer to "Times New Roman" Font Database...
    //   Basic Characters
    {0x00,0x00,0x00,0x00,0x00},     //   (  0)    - 0x0000 Empty set
    {0x00,0x00,0x4F,0x00,0x00},     //   (  1)  ! - 0x0021 Exclamation Mark
    {0x00,0x07,0x00,0x07,0x00},     //   (  2)  " - 0x0022 Quotation Mark
    {0x14,0x7F,0x14,0x7F,0x14},     //   (  3)  # - 0x0023 Number Sign
    {0x24,0x2A,0x7F,0x2A,0x12},     //   (  4)  $ - 0x0024 Dollar Sign
    {0x23,0x13,0x08,0x64,0x62},     //   (  5)  % - 0x0025 Percent Sign
    {0x36,0x49,0x55,0x22,0x50},     //   (  6)  & - 0x0026 Ampersand
    {0x00,0x05,0x03,0x00,0x00},     //   (  7)  ' - 0x0027 Apostrophe
    {0x00,0x1C,0x22,0x41,0x00},     //   (  8)  ( - 0x0028 Left Parenthesis
    {0x00,0x41,0x22,0x1C,0x00},     //   (  9)  ) - 0x0029 Right Parenthesis
    {0x14,0x08,0x3E,0x08,0x14},     //   ( 10)  * - 0x002A Asterisk
    {0x08,0x08,0x3E,0x08,0x08},     //   ( 11)  + - 0x002B Plus Sign
    {0x00,0x50,0x30,0x00,0x00},     //   ( 12)  , - 0x002C Comma
    {0x08,0x08,0x08,0x08,0x08},     //   ( 13)  - - 0x002D Hyphen-Minus
    {0x00,0x60,0x60,0x00,0x00},     //   ( 14)  . - 0x002E Full Stop
    {0x20,0x10,0x08,0x04,0x02},     //   ( 15)  / - 0x002F Solidus
    {0x3E,0x51,0x49,0x45,0x3E},     //   ( 16)  0 - 0x0030 Digit Zero
    {0x00,0x42,0x7F,0x40,0x00},     //   ( 17)  1 - 0x0031 Digit One
    {0x42,0x61,0x51,0x49,0x46},     //   ( 18)  2 - 0x0032 Digit Two
    {0x21,0x41,0x45,0x4B,0x31},     //   ( 19)  3 - 0x0033 Digit Three
    {0x18,0x14,0x12,0x7F,0x10},     //   ( 20)  4 - 0x0034 Digit Four
    {0x27,0x45,0x45,0x45,0x39},     //   ( 21)  5 - 0x0035 Digit Five
    {0x3C,0x4A,0x49,0x49,0x30},     //   ( 22)  6 - 0x0036 Digit Six
    {0x01,0x71,0x09,0x05,0x03},     //   ( 23)  7 - 0x0037 Digit Seven
    {0x36,0x49,0x49,0x49,0x36},     //   ( 24)  8 - 0x0038 Digit Eight
    {0x06,0x49,0x49,0x29,0x1E},     //   ( 25)  9 - 0x0039 Dight Nine
    {0x00,0x36,0x36,0x00,0x00},     //   ( 26)  : - 0x003A Colon
    {0x00,0x56,0x36,0x00,0x00},     //   ( 27)  ; - 0x003B Semicolon
    {0x08,0x14,0x22,0x41,0x00},     //   ( 28)  < - 0x003C Less-Than Sign
    {0x14,0x14,0x14,0x14,0x14},     //   ( 29)  = - 0x003D Equals Sign
    {0x00,0x41,0x22,0x14,0x08},     //   ( 30)  > - 0x003E Greater-Than Sign
    {0x02,0x01,0x51,0x09,0x06},     //   ( 31)  ? - 0x003F Question Mark
    {0x32,0x49,0x79,0x41,0x3E},     //   ( 32)  @ - 0x0040 Commercial At
    {0x7E,0x11,0x11,0x11,0x7E},     //   ( 33)  A - 0x0041 Latin Capital Letter A
    {0x7F,0x49,0x49,0x49,0x36},     //   ( 34)  B - 0x0042 Latin Capital Letter B
    {0x3E,0x41,0x41,0x41,0x22},     //   ( 35)  C - 0x0043 Latin Capital Letter C
    {0x7F,0x41,0x41,0x22,0x1C},     //   ( 36)  D - 0x0044 Latin Capital Letter D
    {0x7F,0x49,0x49,0x49,0x41},     //   ( 37)  E - 0x0045 Latin Capital Letter E
    {0x7F,0x09,0x09,0x09,0x01},     //   ( 38)  F - 0x0046 Latin Capital Letter F
    {0x3E,0x41,0x49,0x49,0x7A},     //   ( 39)  G - 0x0047 Latin Capital Letter G
    {0x7F,0x08,0x08,0x08,0x7F},     //   ( 40)  H - 0x0048 Latin Capital Letter H
    {0x00,0x41,0x7F,0x41,0x00},     //   ( 41)  I - 0x0049 Latin Capital Letter I
    {0x20,0x40,0x41,0x3F,0x01},     //   ( 42)  J - 0x004A Latin Capital Letter J
    {0x7F,0x08,0x14,0x22,0x41},     //   ( 43)  K - 0x004B Latin Capital Letter K
    {0x7F,0x40,0x40,0x40,0x40},     //   ( 44)  L - 0x004C Latin Capital Letter L
    {0x7F,0x02,0x0C,0x02,0x7F},     //   ( 45)  M - 0x004D Latin Capital Letter M
    {0x7F,0x04,0x08,0x10,0x7F},     //   ( 46)  N - 0x004E Latin Capital Letter N
    {0x3E,0x41,0x41,0x41,0x3E},     //   ( 47)  O - 0x004F Latin Capital Letter O
    {0x7F,0x09,0x09,0x09,0x06},     //   ( 48)  P - 0x0050 Latin Capital Letter P
    {0x3E,0x41,0x51,0x21,0x5E},     //   ( 49)  Q - 0x0051 Latin Capital Letter Q
    {0x7F,0x09,0x19,0x29,0x46},     //   ( 50)  R - 0x0052 Latin Capital Letter R
    {0x46,0x49,0x49,0x49,0x31},     //   ( 51)  S - 0x0053 Latin Capital Letter S
    {0x01,0x01,0x7F,0x01,0x01},     //   ( 52)  T - 0x0054 Latin Capital Letter T
    {0x3F,0x40,0x40,0x40,0x3F},     //   ( 53)  U - 0x0055 Latin Capital Letter U
    {0x1F,0x20,0x40,0x20,0x1F},     //   ( 54)  V - 0x0056 Latin Capital Letter V
    {0x3F,0x40,0x38,0x40,0x3F},     //   ( 55)  W - 0x0057 Latin Capital Letter W
    {0x63,0x14,0x08,0x14,0x63},     //   ( 56)  X - 0x0058 Latin Capital Letter X
    {0x07,0x08,0x70,0x08,0x07},     //   ( 57)  Y - 0x0059 Latin Capital Letter Y
    {0x61,0x51,0x49,0x45,0x43},     //   ( 58)  Z - 0x005A Latin Capital Letter Z
    {0x00,0x7F,0x41,0x41,0x00},     //   ( 59)  [ - 0x005B Left Square Bracket
    {0x02,0x04,0x08,0x10,0x20},     //   ( 60)  \ - 0x005C Reverse Solidus
    {0x00,0x41,0x41,0x7F,0x00},     //   ( 61)  ] - 0x005D Right Square Bracket
    {0x04,0x02,0x01,0x02,0x04},     //   ( 62)  ^ - 0x005E Circumflex Accent
    {0x40,0x40,0x40,0x40,0x40},     //   ( 63)  _ - 0x005F Low Line
    {0x01,0x02,0x04,0x00,0x00},     //   ( 64)  ` - 0x0060 Grave Accent
    {0x20,0x54,0x54,0x54,0x78},     //   ( 65)  a - 0x0061 Latin Small Letter A
    {0x7F,0x48,0x44,0x44,0x38},     //   ( 66)  b - 0x0062 Latin Small Letter B
    {0x38,0x44,0x44,0x44,0x20},     //   ( 67)  c - 0x0063 Latin Small Letter C
    {0x38,0x44,0x44,0x48,0x7F},     //   ( 68)  d - 0x0064 Latin Small Letter D
    {0x38,0x54,0x54,0x54,0x18},     //   ( 69)  e - 0x0065 Latin Small Letter E
    {0x08,0x7E,0x09,0x01,0x02},     //   ( 70)  f - 0x0066 Latin Small Letter F
    {0x06,0x49,0x49,0x49,0x3F},     //   ( 71)  g - 0x0067 Latin Small Letter G
    {0x7F,0x08,0x04,0x04,0x78},     //   ( 72)  h - 0x0068 Latin Small Letter H
    {0x00,0x44,0x7D,0x40,0x00},     //   ( 73)  i - 0x0069 Latin Small Letter I
    {0x20,0x40,0x44,0x3D,0x00},     //   ( 74)  j - 0x006A Latin Small Letter J
    {0x7F,0x10,0x28,0x44,0x00},     //   ( 75)  k - 0x006B Latin Small Letter K
    {0x00,0x41,0x7F,0x40,0x00},     //   ( 76)  l - 0x006C Latin Small Letter L
    {0x7C,0x04,0x18,0x04,0x7C},     //   ( 77)  m - 0x006D Latin Small Letter M
    {0x7C,0x08,0x04,0x04,0x78},     //   ( 78)  n - 0x006E Latin Small Letter N
    {0x38,0x44,0x44,0x44,0x38},     //   ( 79)  o - 0x006F Latin Small Letter O
    {0x7C,0x14,0x14,0x14,0x08},     //   ( 80)  p - 0x0070 Latin Small Letter P
    {0x08,0x14,0x14,0x18,0x7C},     //   ( 81)  q - 0x0071 Latin Small Letter Q
    {0x7C,0x08,0x04,0x04,0x08},     //   ( 82)  r - 0x0072 Latin Small Letter R
    {0x48,0x54,0x54,0x54,0x20},     //   ( 83)  s - 0x0073 Latin Small Letter S
    {0x04,0x3F,0x44,0x40,0x20},     //   ( 84)  t - 0x0074 Latin Small Letter T
    {0x3C,0x40,0x40,0x20,0x7C},     //   ( 85)  u - 0x0075 Latin Small Letter U
    {0x1C,0x20,0x40,0x20,0x1C},     //   ( 86)  v - 0x0076 Latin Small Letter V
    {0x3C,0x40,0x30,0x40,0x3C},     //   ( 87)  w - 0x0077 Latin Small Letter W
    {0x44,0x28,0x10,0x28,0x44},     //   ( 88)  x - 0x0078 Latin Small Letter X
    {0x0C,0x50,0x50,0x50,0x3C},     //   ( 89)  y - 0x0079 Latin Small Letter Y
    {0x44,0x64,0x54,0x4C,0x44},     //   ( 90)  z - 0x007A Latin Small Letter Z
    {0x00,0x08,0x36,0x41,0x00},     //   ( 91)  { - 0x007B Left Curly Bracket
    {0x00,0x00,0x7F,0x00,0x00},     //   ( 92)  | - 0x007C Vertical Line
    {0x00,0x41,0x36,0x08,0x00},     //   ( 93)  } - 0x007D Right Curly Bracket
    {0x02,0x01,0x02,0x04,0x02},     //   ( 94)  ~ - 0x007E Tilde
    {0x08,0x0C,0x0E,0x0C,0x08},     //   ( 95)  upward facing triangle/arrow
    {0x08,0x18,0x38,0x18,0x08},     //   ( 96)  downward facing triangle/arrow
};

Saurabh_B

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Re: INTIALISATION CODE FOR NHD-3.12-25664UCB2-ND
« Reply #6 on: February 01, 2018, 02:02:02 PM »
Semed,

Sorry i gave you the wrong github link, the one that i posted was for our Color OLEDs.
The one that this display along with our 2.8" and 2.7" OLED displays use is here: https://github.com/search?utf8=%E2%9C%93&q=SSD1322&type=

The font table should still work for a 5x8 character array, however you need to resize the window.

To write the character you would need to give the start x and y addresses. Which would be C & D in your previous post.


semed

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Re: INTIALISATION CODE FOR NHD-3.12-25664UCB2-ND
« Reply #7 on: February 01, 2018, 09:00:29 PM »
what variable should i assign the font table array to?
there seems to be many font tables of different sizes not sure which one to use

semed

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Re: INTIALISATION CODE FOR NHD-3.12-25664UCB2-ND
« Reply #8 on: February 04, 2018, 10:51:31 AM »
Surab can you describe how to print characters on the screen given a font table
I am not sure which function to use
I am new to display screens like this so i need a little more info
also regarding the variables a and b in the example code what do those stand for?

 

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